1. Regional Centre for Child and Youth Mental Health and Child Welfare, NORCE Norwegian Research Centre, Bergen, Norway
2. Center for Alcohol & Drug Research, Stavanger University Hospital, Stavanger, Norway
3. Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway
4. Department of Health Promotion, Norwegian Institute of Public Health, Bergen, Norway
5. Centre for Evaluation of Public Health Measures, Norwegian Institute of Public Health, Oslo, Norway